15H504 up for sale is a new helical extension spring , covered under p/n 9326121 nsn  5360-01-085-0720, see more public dimension data below, new part from our warehouse, the wire size is 0.055 to 0.057 inches in diameter , see below more specs are giving

Buyer to pay calculated shipping and packing to your locations, see our store for more items like this click below, we will work with you to save on shipping for multiple item purchases, Thank you RWK